Slides in this set

Slide 1

Slide 2

BY THE END OF THIS LESSON YOU WILL.. Know what propulsion is. Give examples of how it is used. Explain how it works in a machine.…read more

Slide 3

...WHAT IS IT? Dictionary definition says it is ..."The action of driving or pushing forward" Propulsion moves things like spacecraft's or jet planes forward by pushing something out of the back of the engine. Everyday example.Think of a balloon that you blow up and then release. The air rushing outof the back pushes the balloon forward. This happens because of aphenomenon described by Sir Isaac Newton: "every action has an equaland opposite reaction."…read more

Slide 4

WHAT IS IT? ­ CONTINUED A propulsion system is a machine that produces thrust to push an object forward. For example, On airplanes, thrust is usually generated through some application of Newton's third law of action and reaction. A gas, or working fluid, is accelerated by the engine, and the reaction to this acceleration produces a force on the engine THRUST In a machine propulsion is used to produce thrust to push and object or the machine forward…read more

Slide 5

PROPULSION IN PLANE ENGINES The Gnome was one of several rotary engines which were popular on fighter planes during World War I. The Gnome was unique in that theintake valves were located within the pistons. Otherwise, this engine usedthe familiar Otto four stroke cycle. Atany given point, each of the cylinders is in a different phase of the cycle. In thefollowing discussion, follow the master cylinder with the green connecting rod.…read more